package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.*;
import java.util.List;


@Configuration
@Slf4j
public class WebMvcConfig implements WebMvcConfigurer{


    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("释放静态资源");
        registry.addResourceHandler("/backend/**")
                .addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**")
                .addResourceLocations("classpath:/front/");
    }

    /**
     * 扩展MVC消息转换器
     */
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展MVC消息转换器");
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0, messageConverter);
    }

}
